全文获取类型
收费全文 | 1091篇 |
免费 | 21篇 |
国内免费 | 10篇 |
专业分类
管理学 | 101篇 |
民族学 | 3篇 |
人口学 | 26篇 |
丛书文集 | 57篇 |
理论方法论 | 35篇 |
综合类 | 317篇 |
社会学 | 74篇 |
统计学 | 509篇 |
出版年
2024年 | 2篇 |
2023年 | 9篇 |
2022年 | 17篇 |
2021年 | 21篇 |
2020年 | 27篇 |
2019年 | 35篇 |
2018年 | 46篇 |
2017年 | 62篇 |
2016年 | 33篇 |
2015年 | 35篇 |
2014年 | 54篇 |
2013年 | 204篇 |
2012年 | 69篇 |
2011年 | 51篇 |
2010年 | 53篇 |
2009年 | 47篇 |
2008年 | 33篇 |
2007年 | 40篇 |
2006年 | 47篇 |
2005年 | 38篇 |
2004年 | 44篇 |
2003年 | 26篇 |
2002年 | 22篇 |
2001年 | 26篇 |
2000年 | 18篇 |
1999年 | 23篇 |
1998年 | 11篇 |
1997年 | 8篇 |
1996年 | 1篇 |
1995年 | 5篇 |
1994年 | 1篇 |
1993年 | 4篇 |
1992年 | 3篇 |
1990年 | 2篇 |
1988年 | 1篇 |
1986年 | 2篇 |
1984年 | 1篇 |
1982年 | 1篇 |
排序方式: 共有1122条查询结果,搜索用时 15 毫秒
81.
Blest (2000, Aust. N. Z. J. Stat. 42 , 101–111) proposed a new measure of rank correlation that is sensitive to discrepancies in the small ranks. This paper investigates the efficiency properties of non‐parametric tests for independence based on Blest's correlation coefficient and its modifications. Pitman efficiency comparisons are made with analogous tests existing in the literature. Conditions for Pitman optimality of the Blest‐type tests are established. 相似文献
82.
V. Savani 《统计学通讯:理论与方法》2013,42(5):767-783
In this article we investigate a class of moment-based estimators, called power method estimators, which can be almost as efficient as maximum likelihood estimators and achieve a lower asymptotic variance than the standard zero term method and method of moments estimators. We investigate different methods of implementing the power method in practice and examine the robustness and efficiency of the power method estimators. 相似文献
83.
AbstractWe propose a cure rate survival model by assuming that the number of competing causes of the event of interest follows the negative binomial distribution and the time to the event of interest has the Birnbaum-Saunders distribution. Further, the new model includes as special cases some well-known cure rate models published recently. We consider a frequentist analysis for parameter estimation of the negative binomial Birnbaum-Saunders model with cure rate. Then, we derive the appropriate matrices for assessing local influence on the parameter estimates under different perturbation schemes. We illustrate the usefulness of the proposed model in the analysis of a real data set from the medical area. 相似文献
84.
In this work a new type of logits and odds ratios, which includes as special cases the continuation and the reverse-continuation logits and odds ratios, are defined. We prove that these logits and odds ratios define a parameterization of the joint probabilities of a two way contingency table. The problem of testing equality and inequality constraints on these logits and odds ratios is examined with particular regard to two new hypotheses of monotone dependence. Work partially supported by a MIUR2004 grant. Preliminary findings have been presented at SIS (Società Italiana di Statistica) Annual Meeting, Torino, 2006. 相似文献
85.
We study the asymptotic behaviour of least squares estimators (LSE) in regression models for long-range dependent random fields observed on spheres. The LSE can be given as a weighted functional of long-range dependent random fields. It is known that in this scenario the limits can be non-Gaussian. We derive the limit distribution and the corresponding rate of convergence for the estimators. The results were obtained under rather general assumptions on the random fields. Simulation studies were conducted to support theoretical findings. 相似文献
86.
Abstract. This article presents a framework for comparing bivariate distributions according to their degree of regression dependence. We introduce the general concept of a regression dependence order (RDO). In addition, we define a new non‐parametric measure of regression dependence and study its properties. Besides being monotone in the new RDOs, the measure takes on its extreme values precisely at independence and almost sure functional dependence, respectively. A consistent non‐parametric estimator of the new measure is constructed and its asymptotic properties are investigated. Finally, the finite sample properties of the estimate are studied by means of a small simulation study. 相似文献
87.
William V. Gehrlein 《统计学通讯:模拟与计算》2013,42(4):349-358
For four variables x1,x2, x3 and x4, which have a quadrivariate normal distribution with means equal to zero, the positive ortrhant probability is the probability that all of the x.'s are simultaneously positive. A representation for the quadrivariate normal positive orthant probability is obtained and it is a function of no more than three integrals over a single variable. Extensive testing has shown this representation to be very efficient on a computational basis. 相似文献
88.
《随机性模型》2013,29(2):205-227
Abstract Extremal dependence analysis assesses the tendency of large values of components of a random vector to occur simultaneously. This kind of dependence information can be qualitatively different than what is given by correlation which averages over the total body of the joint distribution. Also, correlation may be completely inappropriate for heavy tailed data. We study the extremal dependence measure (EDM), a measure of the tendency of large values of components of a random vector to occur simultaneously and show consistency of an estimator of the EDM. We also show asymptotic normality of an idealized estimator in a restricted case of multivariate regular variation where scaling functions do not have to be estimated. 相似文献
89.
José-Luis Guerrero-Cusumano 《统计学通讯:理论与方法》2013,42(12):2985-3006
Two measures of dependence for multivariate t and Cauchy random variables are developed based on Kullback–Leibler number. The mutual information number T(X) is obtained in a closed expression form, as well as its asymptotic distribution. A dependence coefficient ρ1, is defined (based on the Kullback–Leibler number) with the properties of ρ1=0 indicating independence and ρ1=1indicating degeneracy. Two real life examples from the stock market are used to analyze the level of dependence and correlation among stocks. 相似文献
90.
A generalized negative binomial distribution is derived from the Markov Bernoulli sequence of successes and failures. We study the properties and applications of this distribution. The properties are illustrated by two examples of discrete time queueing systems. The distribution is then fitted to two data sets, the eruption record of Mt. Sangay, and a record of computer disk failure accesses. In the first case there is a strong serial dependence in the data and the generalized negative binomial provides a good fit, while in the second case, although there is a significant serial dependence, it is insufficient to justify the additional parameter of the distribution. We conclude by demonstrating the usefulness of the distribution in the field of statistical quality control. 相似文献